Retractable ladder assembly

Details Retractable ladder assembly Retractable ladder assembly

1990-08-20

1991-07-23

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Wall- or floor-attached

Wall-mounted platform, with ladder

182106, 182127, 280166, E06C 504

Patent

active

050335820

ABSTRACT:
Ladder assemblies are needed on large vehicles for an operator to ascend to the cab of a vehicle. The ladder assembly should be moveable between a lowered position for easy access and a raised position to prevent damage to the ladder when the vehicle is in use. The subject ladder assembly includes a pair of spaced rails mounted to the vehicle and an elongate ladder moveably positioned between the spaced rails. Cooperating means extend between the rails and the elongate ladder to position the ladder with respect to the rails and guide the ladder on the rails when the ladder is moved. The arrangement of components provides a simple and compact arrangement for raising and lowering the ladder.

REFERENCES:
patent: 415661 (1889-11-01), White
patent: 719183 (1903-01-01), Buell
patent: 1178314 (1916-04-01), Greco
patent: 1808492 (1931-06-01), Bocchino
patent: 3601220 (1971-08-01), Saucier
patent: 3869022 (1975-03-01), Wallk
patent: 4067412 (1978-01-01), Jackson
patent: 4243120 (1981-01-01), Pratt, Jr. et al.

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